RASHAAD RUDDOCK
NPI 1477422871
Technician/Technologist in Washington, DC

NPI Status: Active since November 03, 2025

Contact Information

3801 CONNECTICUT AVE NW STE 100
WASHINGTON, DC
ZIP 20008
Phone: (202) 525-1641

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Technician/Technologist

About RASHAAD RUDDOCK

This page provides the complete NPI Profile along with additional information for Rashaad Ruddock, a provider established in Washington, District Of Columbia with a medical specialization in Technician/technologist. The healthcare provider is registered in the NPI registry with number 1477422871 assigned on November 2025. The practitioner's primary taxonomy code is 156F00000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1477422871
Provider Name: RASHAAD RUDDOCK
Gender: Male
Entity Type: Individual
Location Address: 3801 CONNECTICUT AVE NW STE 100 WASHINGTON, DC 20008
Location Phone: (202) 525-1641
Mailing Address: 1361 OTIS PL NW WASHINGTON, DC 20010
Is Sole Proprietor?: No
Enumeration Date: 11-03-2025
Last Update Date: 11-03-2025
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Technician/Technologist
Taxonomy Code: 156F00000X
Type: Eye and Vision Services Providers
Taxonomy Description: A broad category grouping different kinds of technologists and technicians. See individual definitions.

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1477422871, we treat the final digit (1) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 4

Pos 8

Unchanged

Pos 9

Doubled → 14 → 1 + 4

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 4 → 8 2 → 4 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 4 + 1 + 4 + 7 + 8 + 2 + 4 + 8 + 1 + 4 + 24 = 69

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1477422871.